Radeon HD 5750 512MB vs Radeon HD 6670 (OEM)

Intro

Compare those specifications to the Radeon HD 6670 (OEM), which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific model. It features 480 SPUs as well as 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 23 Watts (37%)

Memory Bandwidth

Theoretically, the Radeon HD 5750 512MB should perform a small bit faster than the Radeon HD 6670 (OEM) overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 9600 (15%)

Texel Rate

The Radeon HD 5750 512MB is much (approximately 31%) faster with regards to AF than the Radeon HD 6670 (OEM). (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 6000 (31%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5750 512MB is superior to the Radeon HD 6670 (OEM), and very much so. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 4800 (75%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.